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Author Topic: To Jtag Or Not To Jtag  (Read 88 times)

AZImmortal

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To Jtag Or Not To Jtag
« on: January 12, 2010, 08:19:00 PM »
The answer is: don't hold your breath.  Just JTAG hack your console now.  It took years to discover this one exploit and another one might never be discovered.
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Twis7eD

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To Jtag Or Not To Jtag
« Reply #1 on: January 12, 2010, 08:37:00 PM »
QUOTE(AZImmortal @ Jan 12 2010, 09:19 PM) View Post

The answer is: don't hold your breath.  Just JTAG hack your console now.  It took years to discover this one exploit and another one might never be discovered.

This.

JTAGing makes so many things possible. If you've had an Xbox with that kernal lying around this whole time, you've probably not done anything with it anyway. So, just JTAG it.
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papercut193

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To Jtag Or Not To Jtag
« Reply #2 on: January 13, 2010, 02:14:00 AM »
Just do it!  If everything goes well you won't regret it.  There has been lots of homebrew apps being released lately and I'm sure there are lots more to come
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niai

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To Jtag Or Not To Jtag
« Reply #3 on: January 13, 2010, 05:12:00 AM »
it will not hert to jtag as you can use for homebrew and play all new games the only thing you cant do is go on live but you havent do that for a few months so i would say there np and if you want to get it back to a pre jtaged stat you just have to reflash with the orig nand and there you go you have you box back
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bmcclint

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To Jtag Or Not To Jtag
« Reply #4 on: January 13, 2010, 08:19:00 PM »
QUOTE(Guy Montag @ Jan 13 2010, 09:10 PM) View Post

I can appreciate this question.  When I got my first original Xbox I used a modchip to modify the thing.  Then the next xbox I got I used the software mod that was a thousand times easier.  However, I would have had to have waited a year to take advantage of everything that I was able to do that whole time.  Looking at it like that the chip was definitely the way to go at the time.  Fast forward to the 360 and I agree with the previous post that it sure took a long time to get to this point and I think it's a good idea to go ahead and embrace it now.  Sure, there isn't a TON of homebrew right now but the convenience of running games off of an external HD is pretty freaking awesome by itself.  I say go for it.  It's a steep learning curve but it's a great payoff and a lot of fun in the long run.


Thank you so much for an inspired reply.  I too TSOP flashed my first two XB1 while I soft-modded the next two so you could see where I was going.  It definitly got easier as time progressed.  

I have read up on the JTAG and the solder points and I'll have to do some more.  I saw a few tutorials with an DB-9 plug or equivalent in the rear and a custom DB-25 cable to allow a more 'clean' solution.  I may look more into that but the cable length issues seem to concern me along with the multiple flashes/reads required to ensure a 'clean' read/flash has occurred.  

If anyone have a solution that they prefer and has proven to be reliable I would appreciate a link to a post.  Odds are I may have already read up on it but the more I hear success stories the more I am encouraged to attempt.

One more item to queue up...JTAG 360...Thanks again...
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NineLime

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To Jtag Or Not To Jtag
« Reply #5 on: January 13, 2010, 09:49:00 PM »
http://forums.xbox-s...howtopic=700442 this tutorial worked for me without problems, if it gives you problems connecting to your nand, it's the wiring you did, or the resistors. The other tutorial I used using linux really messed me up on another xbox, so this is the one I'd reccomend. You might spend 10-20 hours if you get caught up in trying to connect to your xbox. I didn't even use a cable the first time, just wires going into the xbox. Then a cat5 cable connected to the motherboard coming out of the case, then to a coupler, and the other end of the cable I had the other end of the cat5 stripped and stuck into the right ports on the paralell port. smile.gif

IPB Image

IPB Image

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bmcclint

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To Jtag Or Not To Jtag
« Reply #6 on: January 14, 2010, 10:05:00 PM »
Whats up with this 'flash the first 20 blocks for the XELL booter and finish the rest in Ubuntu Live CD'.

Any value or pursue the full 16mb dump method most tuts cover?
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bmcclint

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« Reply #7 on: January 14, 2010, 10:39:00 PM »
Another ?...The JTAG wires are to stay intact for the life of the HACK.  Got it.  Has anyone connected to switch to them so they can be adjusted from outside the case?  Like using a 3 position dip switch accessible from the back of the console or from under the HDD like some of the RJ45 installs I have seen.
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Guy Montag

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« Reply #8 on: January 15, 2010, 10:44:00 AM »
I'm not sure why you'd want to have a switch for the JTAG.  It's necessary to always have it wired up for XBR to even boot.  Even if you flash your old dash back you can leave the JTAG wires intact and it will boot fine.

The RJ-45 coupler is for flashing your NAND and technically has nothing to do with the JTAG hack.  You will more than likely update your NAND so having outside access to those wires makes sense.
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W1zz

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« Reply #9 on: January 15, 2010, 05:21:00 PM »
Just do it! At the moment your becoming more and more restricted on what games you can run. Most of the new stuff require an update which will blow your efuses.
I'm even thinking of sourcing an exploitable spare, just in case my current one goes RROD.
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bmcclint

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« Reply #10 on: January 22, 2010, 06:11:00 PM »
Gotta bump this for one last ?...

Should I remove the resistor that stop the e-fuses from blowing?
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AZImmortal

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« Reply #11 on: January 22, 2010, 08:15:00 PM »
You don't need to remove the resistor if you're confident that you'll never accidentally update the Xbox, but if you're able to remove it, it might be worth the extra effort for the piece of mind that you'll always have an exploitable console.  As for your LPT problem, from what I understand, your computer pretty much has to have a parallel port built in for it to work properly.  Someone else was saying that a certain few USB adapters might work, but I haven't seen anyone directly say that they've had success this way.
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bmcclint

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« Reply #12 on: January 23, 2010, 10:03:00 AM »
I might have to shelve this project...purchased all the parts, < $10, but never thought to look for an LPT.  They have been so common that I just assumed it was there...

I have two ASUS P5Q-PRO boards and they don't have LPT on the back plate, headers on the MB or any reference in the BIOS so I'm going with no go on those.  My two MAC laptops have no ports other than USB and other misc.  I have an old 486 laptop, for posterity, but only a floppy drive and no USB so installing anything there at this time I would assume is impossible.

I do have an system with an LPT but its my LINUX server running FC6.  Can the initial flash process can be done through LINUX?  I haven't looked that route.  I can install software there but taking it down for a Window build it out...

Can I do all the soldering and still boot from the retail software until I find an LPT port or will the system fail to boot once both JTAG and LPT are soldered in?  At least I could get that far...

Thanks...
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dakaku

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To Jtag Or Not To Jtag
« Reply #13 on: January 23, 2010, 10:09:00 AM »
You can boot normal with the jtag wires in.
Why dont just hook a cheap hdd to the linux pc and install windows ?
Here is a tut i made for a usb flasher (~20€):
http://docs.google.c...2...hqZjM&hl=en
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bmcclint

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« Reply #14 on: January 23, 2010, 10:13:00 PM »
QUOTE(dakaku @ Jan 23 2010, 06:09 PM) View Post

You can boot normal with the jtag wires in.
Why dont just hook a cheap hdd to the linux pc and install windows ?
Here is a tut i made for a usb flasher (~20€):
http://docs.google.c...2...hqZjM&hl=en


Normal boot cool...I can proceed...

Linux server runs the house so offline can be a problem...linux software would be great...

USB flasher looks cool and would really like to try but looks like art2003 and classic programmer both need a parallel port so that would not be a valid solution, but I would love to try it.  Been wanting to get into more of the hardware building, been in software WAY too long.
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